/Engine/Source/Runtime/Landscape/Public/LandscapeEdit.h
void CopyTextureFromWeightmap ( [UTexture2D](API\Runtime\Engine\Engine\UTexture2D) * Dest, int32 DestChannel, [ULandscapeComponent](API\Runtime\Landscape\ULandscapeComponent) * Comp, [ULandscapeLayerInfoObject](API\Runtime\Landscape\ULandscapeLayerInfoObject) * LayerInfo, int32 MipIndex )